Perennials; caudex simple or branched, (sometimes with persistent leaf bases); not scapose. Stems unbranched, (0.6-)1-2.5(-3.5) dm, pubes-cent proximally, usually glabrous distally, rarely sparsely pubescent, trichomes simple, 0.1-0.5 mm, often with stalked, 2(-4)-rayed ones. Basal leaves rosulate; petiolate; petiole (0.2-1(-2) cm), proximal margin ciliate, (trichomes simple, 0.2-0.7 mm); blade oblanceolate to spatulate, (0.6-)1-3.5(-4.3) cm × (2-) 4-10(-14) mm, margins entire or dentate, surfaces pubescent with short-stalked, (2-)4-rayed trichomes, 0.05-0.35 mm, sometimes adaxially with simple ones. Cauline leaves (3-)5-9(-11); sessile; blade broadly ovate to lanceolate or oblong, margins entire or dentate, surfaces pubescent as basal or adaxially also with mostly simple trichomes. Racemes (11-)15-32 (-47)-flowered, ebracteate, elongated in fruit; rachis not flexuous, glabrous or pubescent, trichomes simple and short-stalked, 2-4-rayed. Fruiting pedicels horizontal to divaricate-ascending, straight or curved, (5-)7-18 (-23) mm, glabrous or sparsely pubescent abaxially, trichomes simple and 2-rayed. Flowers: sepals ovate-oblong, 2.2-3.5 mm, subapically sparsely pubescent, (trichomes simple, short-stalked, and 2-rayed); petals yellow, oblanceolate, 4-6 × 1.5-2 mm; anthers oblong, 0.6-1 mm. Fruits elliptic to elliptic-lanceolate, plane, flattened, 5-9(-12) × 2-3 mm; valves glabrous; ovules 10-18 per ovary; style (0.8-)1.4-2.7(-3.6) mm. Seeds ovoid, 1-1.2 × 0.7-0.8 mm. 2n = 20.
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